CN202545899U - Hydraulic self-control check valve - Google Patents
Hydraulic self-control check valve Download PDFInfo
- Publication number
- CN202545899U CN202545899U CN2012202120790U CN201220212079U CN202545899U CN 202545899 U CN202545899 U CN 202545899U CN 2012202120790 U CN2012202120790 U CN 2012202120790U CN 201220212079 U CN201220212079 U CN 201220212079U CN 202545899 U CN202545899 U CN 202545899U
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- hydraulic cylinder
- wall
- valve plate
- valve
- safety check
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Abstract
The utility model discloses a hydraulic self-control check valve, comprising a valve body, a valve plate, a spindle and a slowly-closing device. The slowly-closing device comprises a hydraulic cylinder, a rocking wall, a fuel tank and a weight balancing block which is connected with the rocking wall. One end of the rocking wall is connected with the spindle; the hydraulic cylinder is arranged below the rocking wall; the rocking wall between the weight balancing block and the spindle is in hinged connection with the piston rod of the hydraulic cylinder; a spring is arranged between the bottom of the hydraulic cylinder and the piston rod of the hydraulic cylinder; and the bottom of the hydraulic cylinder is communicated with the fuel tank by an oil tube. When the valve plate of the check valve is closed, the valve plate can realize slow closing by virtue of three-level speed regulation to effectively eliminate water hammer. The check valve has the advantages of high self-control degree, simple structure, convenience in installation and maintenance, small installation room, saved room and saved construction cost.
Description
Technical field
The utility model relates to safety check, particularly the slow closing device of safety check.
Background technique
At present; Safety check is widely used in the centrifugal pump outlet port of oil, chemical industry, pharmacy, metallurgy, coal, electric power, urban water supply and sewerage, sewage treatment works; Prevent the medium counter flow in the pipe network; Automatically eliminate destructive water hammer, prevent the counter-rotating of water pump and drive motor thereof, thereby guarantee that water pump and pipeline are not damaged.Be indispensable equipment in the pipe network.Existing safety check opening angle is little, and resistance is big, and energy loss is big.When closing, Slow Close weak effect, not even Slow Close.Valve shaft or connecting pin are cut off when serious, cause valve normally to use.Thereby cause the damage of pipeline or water pump and drive motor equipment thereof.
Existing safety check flow resistance generally can reach 0.02～0.06MPa, and water factory consumes energy huge on safety check every year in the water delivery process.Certainly on the pipeline of other industries such as Sewage Plant, also can cause similar loss.Simultaneously, often there is not Slow Close of oil cylinder in existing safety check, and bump is big when causing closing, and can't eliminate water hammer, causes the damage of pipeline or water pump and drive motor equipment thereof.Can't guarantee the normal operation of pipe network.Therefore,, eliminate water hammer fully, protect the normal operation of pipe network system, satisfy different clients' demand for saving the energy, imperative to the improvement of existing safety check.
Summary of the invention
In order to solve the problem of above-mentioned existence, the utility model provides a kind of hydraulic pressure automatic control safety check, the Security that can effectively improve the supply fluid of valve, and the automatic control degree is high, and Slow Close is effective, effectively eliminates water hammer.
The technological scheme that the utility model adopts is: a kind of hydraulic pressure automatic control safety check; Comprise valve body, valve plate, the fixedly rotating shaft and the slow closing device of valve plate; It is characterized in that described slow closing device comprises oil hydraulic cylinder, shakes wall, fuel tank and be connected and shake balancing weight on the wall; Described rotating shaft of shaking outside wall one end and the valve body is affixed; Described oil hydraulic cylinder is positioned at the below of shaking wall, the piston rod upper articulation of oil hydraulic cylinder shaking on the wall between balancing weight and rotating shaft, and the bottom that is provided with the spring hydraulic cylinder between the cylinder bottom of oil hydraulic cylinder and the hydraulic cylinder piston is communicated with through the oil pipe pipe with fuel tank.
Further improve, be serially connected with throttle valve on the said oil pipe.
Further improve, said balancing weight and rocking arm flexibly connect.
In order to obtain better effect, offer radial direction through hole on the casing wall of said oil hydraulic cylinder inner chamber top.
The beneficial effect of the utility model is: through oil hydraulic cylinder control valve plate close lock, slowly open, a series of sequences such as speed is closed, Slow Close accomplish the control to safety check.Valve plate makes that the valve plate opening angle is big when opening, and resistance is little, improves the Security of the supply fluid of valve.When valve plate was closed, valve plate can realize that Slow Close effectively eliminates water hammer through three-step timing.The utility model automatic control degree is high, and simple in structure, convenient for installation and maintenance, the mounting point is little, and saving in space is practiced thrift engineering cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the left view of the utility model.
Embodiment
Present embodiment is as shown in Figure 1, and it comprises valve body 1, valve plate 2 and slow closing device, and described valve plate 2 is the streamlined valve plate of rectilinear veneer, and valve plate 2 off-centre can reduce the resistance opening angle that valve plate receives greatly when opening and closing big.Valve plate 2 is connected with slow closing device; Described slow closing device comprises oil hydraulic cylinder 4, shakes wall 5, fuel tank 6 and be connected and shake balancing weight 7 on the wall 5; Described rotating shaft 3 of shaking outside wall 5 one ends and the valve body 1 is affixed; Described oil hydraulic cylinder 4 is positioned at the below of shaking wall 5, piston rod 8 upper articulations of oil hydraulic cylinder 4 shaking on the wall 5 between balancing weight 7 and rotating shaft 3, and the bottom of oil hydraulic cylinder 4 is communicated with through oil pipe 9 pipes with fuel tank 6.Be provided with spring 11 between the cylinder bottom of said oil hydraulic cylinder and the hydraulic cylinder piston 10.Be serially connected with throttle valve 12 on the said oil pipe 9.
Preferred described oil hydraulic cylinder is a single-action hydraulic cylinder, and single-action hydraulic cylinder and Rocker arm 5 and balancing weight 7 be adaptive to be connected the keying of controlling valve plate 2.Single-action hydraulic cylinder is divided into two chambeies up and down, and epicoele is that air cavity is provided with the epicoele exhaust port, and cavity of resorption is that shoe cream room is built-in with spring, and shoe cream room is externally connected with one-way throttle valve, oil pipe and fuel tank.Secondly this slow closing device can be realized first quick closing valve 70% when valve plate is closed, close 20% slowly, closes 10% three-step timing at last slowly and closes.The equal can regulate of the configuration of these three kinds of closing velocities.The sealing surface of valve body adopts valve seal surface build-up welding stainless steel, and stainless steel sealing surface intensity is high, and is corrosion-resistant, long service life.
Claims (4)
1. hydraulic pressure automatic control safety check; Comprise valve body (1), valve plate (2), fixedly rotating shaft of valve plate (3) and slow closing device; It is characterized in that described slow closing device comprises oil hydraulic cylinder (4), shakes wall (5), fuel tank (6) and be connected and shake wall (5) and go up balancing weight (7); Described rotating shaft (3) of shaking outside wall (5) one ends and the valve body (1) is affixed; Described oil hydraulic cylinder (4) is positioned at the below of shaking wall (5); Piston rod (8) upper articulation that shakes wall (5) and oil hydraulic cylinder (4) between balancing weight (7) and the rotating shaft (3) is provided with spring (11) between the cylinder bottom of oil hydraulic cylinder and the hydraulic cylinder piston (10), the bottom of oil hydraulic cylinder (4) is communicated with through oil pipe (9) pipe with fuel tank (6).
2. a kind of hydraulic pressure automatic control safety check according to claim 1 is characterized in that being serially connected with on the said oil pipe (9) throttle valve (12).
3. a kind of hydraulic pressure automatic control safety check according to claim 1 and 2 is characterized in that said balancing weight (7) and rocking arm (5) flexibly connect.
4. a kind of hydraulic pressure automatic control safety check according to claim 3 is characterized in that offering radial direction through hole on the casing wall of said oil hydraulic cylinder (4) inner chamber top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202120790U CN202545899U (en) | 2012-05-11 | 2012-05-11 | Hydraulic self-control check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202120790U CN202545899U (en) | 2012-05-11 | 2012-05-11 | Hydraulic self-control check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545899U true CN202545899U (en) | 2012-11-21 |
Family
ID=47166537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202120790U Expired - Lifetime CN202545899U (en) | 2012-05-11 | 2012-05-11 | Hydraulic self-control check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565455A (en) * | 2014-12-10 | 2015-04-29 | 凯喜姆阀门有限公司 | Slowly-closing check valve |
-
2012
- 2012-05-11 CN CN2012202120790U patent/CN202545899U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565455A (en) * | 2014-12-10 | 2015-04-29 | 凯喜姆阀门有限公司 | Slowly-closing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 244000 Anhui city of Tongling Province City North Avenue No. 188 Patentee after: Anhui Tongdu Flow Technology Co., Ltd. Address before: 244000 Anhui city in Tongling Province, north mountain lion Copper Road No. 188 Patentee before: Anhui Tongdu Valve Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |